6533b821fe1ef96bd127c3e7
RESEARCH PRODUCT
Measurement of the branching ratio of the double Dalitz decayK L →e+e−e+e− and the CP parity of theK L -meson
O. PerdereauArthur SchafferD. CowardG.m. PierazziniKen PeachM. HolderP. GrafströmA. KreutzKonrad KleinknechtL. GatignonR. CasaliR. CarosiDaniel FournierH. RohrerG.d. BarrR. HeinzI. MannelliLydia Iconomidou-fayardR. HagelbergA. WagnerL. BertanzaH. G. SanderD.c. CundyA. NappiJ. ScheidtM. CalvettiF. LeberM. RostH. D. WahlLaurent SerinB. RenkJ. StaeckV.m. MarzulliT. BeierPaolo CalafiuraPeter BuchholzN. DobleC. CerriH. BlümerR. WerthenbachE. AugéP. Mayersubject
PhysicsParticle physicsLarge Hadron ColliderPhysics and Astronomy (miscellaneous)MesonBranching fractionNuclear TheoryParity (physics)Elementary particleNuclear physicsHigh Energy Physics::ExperimentQuantum field theoryNuclear ExperimentEngineering (miscellaneous)description
Data from the NA31 experiment at CERN have been used to measure the branching ratio of the double Dalitz decay of the long-lived neutral kaon. Eight events have been found with negligible background. The measured distribution of the angle between the planes of the two e+e--pairs favours a CP=-1 state for the long-lived neutral kaon. © 1995 Springer-Verlag.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-07-28 | Zeitschrift für Physik C Particles and Fields |